Valve.



J. A. VETH.

VALVE.

APPLlcAloN man MAY lei 191e.

mante@ my 1o, 1917..

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JOsEPH A. vAETH, OE BALTIMORE, MAEYLAnnAssIGNOn ro 'rr-rE eoALE MUEELEE e sAEErY vALvE COMPANY, OE BALTIMORE, MARYLAND, A CORPORATION OF NEW JERSEY;

.ToA all whom t may concern:

Be it known that l, JOSEPH A. VAETma citizen of the United` States, residing at Baltimore in the county of Baltimore citate Vof Maryland, have invented certain new and useful Improvements inv Valves; and l do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same. j

rllhis Ainvention relates to valves and more particularly to a rotary disk valve, which while of general application may be advantageously applied to steam boilers as 'a lblower valve. d f

Owing to the hard usage to which blower valves are subjected in service bothV the valve diskand the valve seat'becom'e'worn and, permit leakage. The replacement of the lworn parts of this form of valve, now in use, is a constant source of expense to the users.

The object of the present invention is to provide a rotary disk valve with a removable and easily adjustable valve seat, and to so construct the valve casing that'the parts thereof are adapted to form both the securing and adjusting means for the valve seat.

There are other features of the invention as will appear from a more detailed description of the same taken in connection with the accompanying drawing, chosen for the purpose of illustration.

Figure 1 is a vertical section of a rotary disk valve, embodying the invention, the

. valve stem and operating handle being shown in elevation.

Figs. 2 and 3 are, respectively, a top plan and a side elevation of the valve disk.

Figs. 4L and 5 are, respectively, a top plan and a transverse section of the valve seat. Figf is a top plan of the valve stem, and

Fig. 7 is a detail view, showing a slight modification.

Throughout the specification and drawing like parts are designated by like numerals.

The numeral -1 indicates the valve casing, the upper portion 2 thereof being provided with an inlet Opening 3, a stuffing vbox 4, and diametrically opposite the stuffing box with a circular opening 5, the lower Vportion 6 of which is of slightly larger diameter and is internally screw-threaded `as VALVE. l

Specification of Letters Patent.` patiente@ July 10, 1917. Appiieatign inea May is, 191e. serial Nasr/,761.

shown at 7. rlhe lower portion 8 of the casing isYeXtei-nally provided adjacent the upper end 9 with a screw-threaded portion 10 adapted to have threaded engagement with the threaded'portion 7 of the upper sectionl of thecasing.` An internally threaded outlet-opening 11 is provided forthe lower portion `of the casing.v

The opening 12 leading from the casing 1 into the stuilingbox .4L andl through vwhich vided with a spherical bearing surface llladapted to engage the rounded ball collar 15 on the said valve stem. This formk of joint allows of a. slight angling of the valve stem 13l and permits the stuffing boX to be packedwhen the valve is under pressure. 1Vlithin the stuffing boX L4; is the packing 16 which is vheld in place by the packing ring 17,'thatis preferably provided with an outwardly extending shoulder 18 adjacent its outer end 19a. To hold the packing `ring `17 in Aadjustable position there is provided the' nut 19, which is threaded on the stuiing box `and is preferably provided with an the valve stem 13 extends is preferably proi opening 20 through which the end of the packing ring extends, the annular shoulder shoulder 18 on the said ring. An operating handle 13a is shown attached to the valve stem 13.

. Below the collar 15 the valve stem is provided with a cross-head 22, and extending outwardly upon opposite sides thereof are the shoulders 23, which are adapted to contact with opposite sides of the downwardly projecting lugl 24C on the casing, to thereby limit the turning movement of the said stem. The lug 24 is commonly formed of suliicient length to limit the turning movement of the said stem to an angle of 90. The crosshead 22 on the valve stem is adapted to eX- tend into the slotl or groove 25a in the valve disk 25, the said groove may and preferably is formed by the pairs of upwardlyy projecting lugs 26 which are provided on the upper face of the disk'25, adjacent the sides of the ports 27 therein. A plate spring 28 is preferably interposed between the lower face of the cross-head 22 and the said disk, the said spring serving to keep the valve disk firmly seated while permitting free expansion of Vthe valve stem vunder the influence of heat, to which the device is subjected when serving as a blower valve.

. The removable valve seat is designated by they reference numeralr 29 and preferably comprises a circular disk provided with a raised central portion 30 and also provided with a transversely extending rib V3l which may be of truss form. An annular shoulder 32 is formed by the raised portion-30 and in the outer circumference of the disk and preferably in line with the rib 31 there is formed'a transversely yextending notch or groove '33.V A v The raised portion SOs provided on op'- 'posits sides of the rib 31 with the ports or vopenings 3% which are adapted to simultaneously register' with the ports 27 in the disk valve: r

lThe diameter' vof the raisedV portion of the i seat is, substantially the saine as the valve disk,V both of these members are housed Y within jthecircular opening 5 of 'the portio'n 2f of the"casing".l The greatest diameter `of valve "seaty is slightly less'than the diameterfof-I'the lowerportion Grof the said opening topei'mit the ready insertion and remoi/'al1 ofthe said seat within'thisV portion.

vTo vmaintaiiithe seat in a iXed position with reference to" rotation, Athere is preferably provided va, round ended ,screw 35"which eX- -tends into4 theopenin'g 5 andv engages with- "in .the notch. d d y 'lll'ieseat 29 is held vfirmly'i'n position by Y means of thelower portion 8.of the casing,

VVth'eupper portion 9 'ofwh'ich engages the lowerface ofthe said seat and holds the latsoft metallic ring washer 36 is preferably ter in .contactV with the lower-face of the disk' valve 25.` The annular shoulder 32 on the lsaid seat isadapted to coperate With the shoulder 32 formed by the portion 6 to limit the inward' or upward movement of lthe valve seat 29. Y

To provide for adjustment of the seat, a

f inserted Y,between the coacting vshoulders 32 and 32a, =whereby the simple screwing up of the lower portion 8 will compensate for any `wear which may occur during a long period in service. Y Y

It will thusv be evident thatl I'have de- Y signed a simple form of valve which, while possessing all `the advantages of the best type of rotary disk valves, such as rotation of the seat,rease of operation and assembly, has in addition a removable and adjustable seat, of a type easyvand inexpensive to manufacture and capable of prolonged use.

drawing a coil spring 2 8@ maybe interposed betweenthe Vcross-head 22a and the upper y faceofathe valve disk25, thefcoilfspring beadapted to be secured ,within the'recess 22bfprovidedin. the lower face of the crosshead; The coil spring 28b Yis adapted to perform the same function as the plate spring Cqpiespi thisjjafht may te nii/aiuta for As is clearly illustratedin Fig. V7 of the 28, which function lhas already been fully described.

Having now described my invention, although it is to be understood that by the aforegoing I do not intend to limit the invention, since the terms used are to be understood in their descriptive, and not in their limiting sense, what I claim and desire to Y secure by Letters Patent is:

l. A valve casing provided with inlet and joutlet openings, said loutlet opening having the inner portion thereof of less diameter than the outer portion, a detachable outlet jme'mbjer adapted to be received in and connected to the outer portion of said outlet opening, a removable valve seat, said seat l'i'aving a raised portion thereon of less dia1neter than the inner portion lof said outlet opening, the shoulder foiined by said raised portion being adapted to limit the movement 'ofjsaid seat in said casing, and a valve disk co'peratin'g with said casing, and means for operatin'gvsaid valve.

2. A valve casing provided with inlet and Aoutlet openings, a removable outlet portion adaptedto be received in and connected to said outlet opening, a rotatable disk valve, an 'adjustable and removable seat therefor, and means including a valvestem for operating said diskvalve, a spherical collar integral with 'said stein, a seat in the said casing adapted to coperate with said collar, and a spring interposed between said stem and tion serving as means for adjustably maintaining said seat in position.

Ll. A valve casingl having a lateral inlet opening and provided with a detachable outlet portion,-means integral with said outlet portionand casing for uniting the same, 'a rotatable valve disk, a removable valve seat, said seat having a raised portion thereon, the shoulder formed by said raised portion Vbeing adapted to coact with said casing to position said seat, and means including a valve stem for operating said disk valve, a spherical collar on said stem and a corre spondingly formed seat in said casing adapted to coperate with the said collar.

Intestimony whereof I aiiix my signature.

JOSEPH A. VAETI-l.-

live tents e'ach, by addressing` the Commissioner of Patents, Washington, D. C. 

